Teledyne 7500ZA - Infrared Gas Analyzer - Manual (Page 124)

Specifications Model 7500ZA
Teledyne Analytical Instruments 108
When 4 components measurement is specified and “H” is
specified at 22nd digit, 3 points is maximum for alarm output
function.
note8) When “B” is specified at 24th digit, measuring range should be
specified by ppm range code. In this case NO, SO2 and CO
measuring range are corresponding range in mg/m3. Please refer
to the table shown below for the corresponding range code based
on “mg/m3”.
note9) When A to D is specified at 25th digit, the analyzer will be
adjusted and delivered with the following gases.
Standard “A”: balance gas N2.
For heat treatment furnace “C”: balance gas 30vol%
H2/remaining N2.
For converter “D”: balance gas CO, CO2.
When other adjustment is required, please specify “Z”.
When “Z” is specified, please attach a list of gas composition
contained in the measuring gas.